/*
 * FreeModbus Libary: BARE Port
 * Copyright (C) 2006 Christian Walter <wolti@sil.at>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * File: $Id$
 */

/* ----------------------- Platform includes --------------------------------*/
#include "port.h"

/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"
#include "fm33lg0xx_fl.h"

/* ----------------------- static functions ---------------------------------*/
static void prvvTIMERExpiredISR( void );

/* ----------------------- Start implementation -----------------------------*/
BOOL
xMBPortTimersInit( USHORT usTim1Timerout50us )
{
    FL_GPTIM_InitTypeDef    TimerBase_InitStruct;
    TimerBase_InitStruct.prescaler = FL_CMU_GetSystemClockFreq()/(1000000/50)-1;
    TimerBase_InitStruct.counterMode = FL_GPTIM_COUNTER_DIR_UP;
    TimerBase_InitStruct.autoReload = usTim1Timerout50us-1;
    TimerBase_InitStruct.clockDivision = FL_GPTIM_CLK_DIVISION_DIV1;
    TimerBase_InitStruct.autoReloadState = FL_DISABLE;
    FL_GPTIM_Init(GPTIM0, &TimerBase_InitStruct);
    FL_GPTIM_ClearFlag_Update(GPTIM0);
    FL_GPTIM_EnableIT_Update(GPTIM0);
    NVIC_SetPriority(GPTIM01_IRQn,2);
    NVIC_EnableIRQ(GPTIM01_IRQn);
    return TRUE;
}


inline void
vMBPortTimersEnable(  )
{
    /* Enable the timer with the timeout passed to xMBPortTimersInit( ) */
    FL_GPTIM_Disable(GPTIM0);
    FL_GPTIM_WriteCounter(GPTIM0, 0);
    FL_GPTIM_ClearFlag_Update(GPTIM0);
    FL_GPTIM_Enable(GPTIM0);
}

inline void
vMBPortTimersDisable(  )
{
    /* Disable any pending timers. */
    FL_GPTIM_Disable(GPTIM0);
}

/* Create an ISR which is called whenever the timer has expired. This function
 * must then call pxMBPortCBTimerExpired( ) to notify the protocol stack that
 * the timer has expired.
 */
static void prvvTIMERExpiredISR( void )
{
    ( void )pxMBPortCBTimerExpired(  );
}


void GPTIM0_1_IRQHandler(void)
{
    if(FL_GPTIM_IsActiveFlag_Update(GPTIM0))
    {
        FL_GPTIM_ClearFlag_Update(GPTIM0);
        prvvTIMERExpiredISR();
    }
}
